home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)protocol.h 5.1 (Berkeley) 6/4/85
- */
-
- /*
- * Routing Information Protocol
- *
- * Derived from Xerox NS Routing Information Protocol
- * by changing 32-bit net numbers to sockaddr's and
- * padding stuff to 32-bit boundaries.
- */
- #define RIPVERSION 1
-
- struct netinfo {
- struct sockaddr rip_dst; /* destination net/host */
- int rip_metric; /* cost of route */
- };
-
- struct rip {
- u_char rip_cmd; /* request/response */
- u_char rip_vers; /* protocol version # */
- u_char rip_res1[2]; /* pad to 32-bit boundary */
- union {
- struct netinfo ru_nets[1]; /* variable length... */
- char ru_tracefile[1]; /* ditto ... */
- } ripun;
- #define rip_nets ripun.ru_nets
- #define rip_tracefile ripun.ru_tracefile
- };
-
- /*
- * Packet types.
- */
- #define RIPCMD_REQUEST 1 /* want info */
- #define RIPCMD_RESPONSE 2 /* responding to request */
- #define RIPCMD_TRACEON 3 /* turn tracing on */
- #define RIPCMD_TRACEOFF 4 /* turn it off */
-
- #define RIPCMD_MAX 5
- #ifdef RIPCMDS
- char *ripcmds[RIPCMD_MAX] =
- { "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" };
- #endif
-
- #define HOPCNT_INFINITY 16 /* per Xerox NS */
- #define MAXPACKETSIZE 512 /* max broadcast size */
-
- /*
- * Timer values used in managing the routing table.
- * Every update forces an entry's timer to be reset. After
- * EXPIRE_TIME without updates, the entry is marked invalid,
- * but held onto until GARBAGE_TIME so that others may
- * see it "be deleted".
- */
- #define TIMER_RATE 30 /* alarm clocks every 30 seconds */
-
- #define SUPPLY_INTERVAL 30 /* time to supply tables */
-
- #define EXPIRE_TIME 180 /* time to mark entry invalid */
- #define GARBAGE_TIME 240 /* time to garbage collect */
-